Walking operator type agricultural machine having transmission s

Details Walking operator type agricultural machine having transmission s Walking operator type agricultural machine having transmission s

1986-03-13

1988-04-26

Bertsch, Richard A.

Motor vehicles

Steered by walking attendant

Handle movement controls vehicle drive

56DIG4, 74197, 172 42, 172125, 474 25, 474133, B62D 5104, F16H 1508

Patent

active

047398507

ABSTRACT:
An agricultural machine has two power transmission lines, one of which includes a disk type frictional stepless change speed apparatus and the other of which includes a belt transmission apparatus. The disk type frictional stepless change speed apparatus comprises a drive disk formed integrally with a split pulley of the belt transmission apparatus, a driven disk in pressure contact with and receiving power from the drive disk, a driven shaft slidably carrying the driven disk, and stays for supporting the driven shaft, the stays being oscillatable about an axis parallel to the driven shaft to permit the driven disk to be released from pressure contact with the drive disk. The agricultural machine further includes a mechanism for sliding the driven disk to effect speed changing. This mechanism is operable to oscillate the stays in a direction to move the driven disk away from the drive disk by an initial operation of the change speed lever and to slide the driven disk into contact with the drive disk by a subsequent operation of the change speed lever, thereby to effect speed changing.

REFERENCES:
patent: 2813433 (1957-11-01), Adams, Jr. et al.
patent: 2942487 (1960-06-01), Claus
patent: 3235061 (1966-02-01), Craig
patent: 3529482 (1970-09-01), Jackson et al.
patent: 3678707 (1972-07-01), Enters et al.
patent: 4322934 (1982-04-01), Doi
patent: 4457086 (1984-07-01), Bacon
patent: 4519459 (1985-05-01), Reaume
patent: 4580669 (1986-04-01), Marto

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